Pipe wrench



' 1,641,025 Aug' 30 1927' B. DoNNELsoN n PIPE WRENCH Filed Aug.V 18.1926 Patented Aug. 30, 1927.

UNITED STATES PATENT oFFflcs.

BLANCHE noNNELsoN, or PRATT, KANSAS, Assia-Nor. or onnirnurn To FRANKGOYEN. onn-Tnnfrn To ,WALTER Pnnreo oNE-rnnrn To w. B. nnss, ONE-ranmaTo J. n. HARDESTY, AND ONE-TENTH To A. s. FARMER.

PIPE WRENCH.

Application led Aug-ust 18, 1926. Serial No. 130,068.

An object is the provision of a wrench of this character in ,which` thestationary jaw is pivotally associated with a frame of a novelconstruction and in which the shank of the movable jaw is slidablethrough said frame, a spring influenced yoke 4member be'- ing pivoted tothe frame and s traddling the carriage and engaging the outer toothededge of the shank of the movable jaw, and whereby the movable jaw may befreely adjusted with respect to the stationary jaw, effectively held atsuchV adjustment, and further wherein a ratchet engagement is affordedlbetween the jaws and the object engaged. Y

To the attainment of the above broadly stated objects and others whichwill present themselves as the nature of the invention is betterunderstood, the improvement further consists in certain other novelfeatures of construction, combination, and operative association ofparts, a satisfactory embodiment of lwhich is disclosed Vby theaccompanying drawings.

In the drawings: Y

Fig. 1 is a side elevation of a wrench in accordance with thisinvention,

Fig. 2 is an edge view thereof, and

Fig. 3 is a sectional view on the line 3 8 of Fig. 1.

The stationary jaw 1 has its outer face toothed, as at 2. The stationaryjaw is arranged at'an angle with respect to a handle member 3 which isintegrally formed with 85 the jaw. The jaw 1 extends laterally andlongitudinally beyond the handle member, and the said handle, at itsjuncture with the outer portion of the jaw, is widened and formed with alug 4. Passing through an 40 opening in the'lug 4 there is a pivot 5.This pivot connects the sides 6 of the frame to the handle 3.' The framehas its ends formed with rearwardly extending substantially U-shapedstraps 7, and its inner edge,

between the straps formed with a wall 8 against which the inner edgeofthe handle 3 contacts. The lower corner of the frame,

opposite that provided with the vlower strap 7, is formed with lugenlargements through which pass a headed pintle 9. This pintle betweenthe mentioned lugs 10 of the frame has arranged thereon a roller 11.`Passing through the lugs and coiled around the ends of the pintlelwhich project beyond said lugs there is a spring 12. The .ends `of thisspring are bent and extended in the same direction to contact with theouter sides y13 of a substantially U-shaped bail 14. The outer orconnecting element of the arms of the bail 14 are arranged at aninclination to provide the saine with what I will term an angle tooth15.

Adapted to be passed through the U- i shaped straps 7 of the frame 6there is the shank 16 of the movable jaw 17. The outer edge of thisshank is toothed, as at 18, and these teeth are adapted to be engaged bythe angle teeth 15 of the bail 14.

The jaw 17 is, of course, arranged over the jaw 1, and has its inner oractive face toothed, as at 19. The wall 8 serves as a fulcrum member'forthe inner edge of the handle 18 and said handle may swing upon the pivot5 toward or away from the shank 16 of the jiaw 177. By this arrangementthe wrench may ratchet over a round object engaged between the jaws. Theshank 16 may be slid betweenthe straps 7 and the yoke 14 to adjust thejaw 17 with respect to the jaw 1, but an outward movement of the saidshank will be prevented by the en-v gagement of the teeth 15 with theteeth 18 on the said shank. the jaw 3 in the direction of the jaw 16will permit of the operator swinging the vbail 14 against the tension ofthe spring 12 so that the tooth 15 of said bail will be brought out ofengagement with the teeth of the shank 16 and thereby permit of anoutward adjustment of the jaw 17 with respect to the jaw 1 or to releasean article from between the jaws. The outward swingving of the handle 3on the pivot 5 will be limited by the contacting engagement of the saidhandle with the roller 11.

The simplicityv and advantages of the con.- struction will, it isthought, be perfectly apparent to those skilled in the art to which suchinvention relates when the foregoing description has been carefully readin con- A slight swinging ofk invention, I

bers :incl U-Sliapenl sliinps extending' `ll'oin the ends of J[he sidemembers, sniil eide members sluiaclilling the handle and lining' theironlel' corners pivotnlly eeenlefl lo said. handle, seid side membersbetween the sli-nps having on innei1 well :unl having their lowercorners provided with luge, :i pvot passing l'ln'ongli mid linie, nroller on. the pivot between llie lugs, zi spi-inn' having: coiled endssoi-rounding the pivot, outward of lille lugs, nnfl having :i eenl'inlpoilion which contacte willi ille onei' edgzje of llie handle, nsnlislnnl'iizllljv Uelieperrl yoke l :1V-

ine' lxfl :mns eonnecliell to lelie pivot and the coiled ends oil 'thespringe having extensions :for el1g n;;fi1iin lille errno olf the yoke,said Gonneeling element :Wrangell nl :in :mgle Witli reispeet lo the:nine and providing;P :L tooth, o, movable jaw lnwing' :i `slinnk whichis slid- ;ible llnongll the elieps for the freine, und lille slmnl: o'lll'lie Snicl movable jow having; il` onlei' end lool'lieil :forengagement with lille `lool'li olf the l\fole.

ln testimony whereof l' elli): my Signulnle.

BLANCHE DONNELSON.

